![]() ![]() ![]() Trying to avoid congestion at peak times meant having to invest in spare capacity, which was usually wasted most of the time.If things got busy the machine could get slow, sometimes very slow….However there were a few different problems with this: As hardware became (a bit) cheaper we got smaller machines that each ran a specialised workload, e.g. When I started in IT we used to have big machines that ran lots of different workloads. A bit of history might make this clearer. ![]() So what are containers?Ĭontainers take the idea of virtual machines one stage further. That is a separate topic that we won’t talk about here. That help you manage Docker containers at large scale. There are paid for versions as well if you want commercial support or enterprise features.Īs well as Docker itself, there are products like Docker Swarm and It’s Open Source and you can do an awful lot with the Community Edition. What is Docker?ĭocker is a containerization product (and it’s But I’m now happy to say I’ve got a much better understanding of what Docker is, so I thought I’d create a few simple notes to help you avoid my confusion and understand the benefits (and potential pitfalls) of using Docker. And you may have said to yourself, “What on earth is a Docker?”Ī few years ago I was just as confused by all the shouting, and could not tell the difference between an image or a container. If you’ve been in IT over the last three years you would’ve heard people shout “DOCKER” from the rooftops demanding its immediate use, everywhere, in your technology infrastructure. ![]()
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